The LiMAR Dual Circulating Sub is designed to provide a contingent circulating facility within a Coiled Tubing BHA when conventional circulation is inadvertently lost.
In the event that circulation is lost, a rupture disc within the Dual Circulating Sub is activated by applying pressure, thus regaining circulation. With the disc ruptured, a drop ball can be pumped down to the BHA for activating a hydraulic disconnect sub, or the secondary circulating piston within the LiMAR® Dual Circulating Sub. The pressure at which the drop ball activates the circulating piston is determined by the number of shear screws used.
TOOL APPLICATIONS:
- To provide a contingent circulating facility within a Coil Tubing BHA
DESIGN FEATURES & BENEFITS:
- Selective shear pressure ratings
- Standard Benoil rupture disc port
- Large thru bore
- Connection options to suit customer requirements
- Simple, robust design ensuring ease of operation for the end user
- Selected components QPQ treated
- Hexagonal flats for safe make-up & break-out
- Corrosion resistant materials
TECHNICAL DATA
| Assembly Part No. | Actual OD | Maximum ID | Make up Length |
| 112-1500-XXX-RX | 1.500" | 0.250" | 7.35" |
| 112-1687-XXX-RX | 1.687" | 0.437" | 8.00" |
| 112-1750-XXX-RX | 1.750" | 0.437" | 8.00" |
| 112-2125-XXX-RX | 2.125" | 0.562" | 8.13" |
| 112-2375-XXX-RX | 2.375" | 0.562" | 8.23" |
| 112-2875-XXX-RX | 2.875" | 0.937" | 8.50" |
| 112-3125-XXX-RX | 3.125" | 1.187" | 11.06" |
XXX - Last 3 digits of part number denotes connection type - Please refer to the connection code data sheet. For additional sizes or further information please contact sales
